59 



o 

 Monthly and Annual Mean Surface Water Temperatures, F 



o o 



NEW YORK CITY UO ii3'N. 7U Ol'W. 



Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Ann. 



1873 69.0 59.14 hli.8 38.6 - 



7ii 36.2 33.2 36.0 hO,3 53.0 67.0 72.9 73.2 70.9 60.2 - 38.5 (52.6) 



1875 32.0 _.-- 



(12) (12) (n) (10) (11) (12) (11) (lU) (lU) (13) (12) (13) 



Mean 33.8 33.1 35.8 U3.6 55.8 65.3 72. U 73.14 69. I4 60.h li8.3 39.0 52.6 



North River, Pier 13 & lii. 



1873-Oct. 1879 incl., readings at 3 p.m. local time. 



Nov. 1879-June 1881 incl., " " 1 p.m. « " 



July 1881-Nov. 1881 incl., " " 2 p.m. " " 



Feb. 1892-Oct. 188ii incl., " " 2:12 p.m." " 



Feb. 1385-1890, incl., " " 2 p.m. 75th meridian time. 



Source - U3CFF 



